Door latch



P. w. SULLIVAN 1,855,697 I Doon LATCH Filed April 22,71929 Patented Apr.26, 1932 UNITED sTATEs .PATENT PERRY' W. SULLIVAN, OF SOUTH BEND, INDIANA, ASSIGNOR TO THE STUDEAKER PORATION, F SOUTH BEND, INDIANA, ACORPORATION OF'NEW JERSEY 'y v Application led .April 22,

This invention relates to door latch operating handles and particularlyto means whereby when the lock mechanism forming a part of the handle ismoved to a predetermined 6l position rotation of the handle will notper- 154 moved to one position rotation of the handle will permit theopening of the door and when the cylindrical member is moved to anotherposition the rotation of the handle will not permit the opening of thedoor.

Another object is to provide a latch operating spindle rotatably mountedin the hollow shell forming a part of the operating handle, the spindlehaving a slot in its inner end adapted to receive a projection formed onan end of the key-controlled cylindrical member rotatably mounted in thehollow shell of the operating handle whereby the rotation of the handlewill permit the openling of the door of which the latch mechanism formsa part. l

A further object is to provide a rotatable latch operating handle havinga hollow shell extending into the door in which is rotatably mounted akey-controlled cylindrical member having a projection at the inner endthereof detachably engageable in a slot formed in a latch operatingspindle rotatably1 mounted in the hollow slr ell forming a part of theoperating handle, the rotatable cylindrical member being provided with apin riding in a slot formed in a cylindrical sleeve seated in the latchoperating handle whereby the projection on the end thereof is guidedinto the slot formed in the latch opera ting spindle.

The above being @Tong the objects of the present invention the sameconsists of certain features and combination ot parts to be hereinafterdescribed and then claimed, having the above and other objects in view.

In the accompanying drawings which il- -DooR 'LATCH 1929. Serial No.357,058.

lustrate a suitable embodiment of my ypresent invention,

Figure 1 isa longitudinal ,sectional view showing the latch operatinghandle and the lock mechanism therefor, the lock mechaf nism being shownin position whereby rotation of the handle will not operate the latchmechanism, certain parts of the device being shown in full lines andother parts broken away t'o more clearly show the invention.

Figure 2 is a fragmentary longitudinal. section similar to Figure 1,showing the lock mechanism in operative position whereby rotationf ofthe handle will operate the latch mechanism to open the door. y

Figure 3 is an enlarged transverse sectional view taken substantially ontheline 3 3 of Figure 2. n

Figure 4 is a transverse sectional view taken on the line 1f-4: ofFigure 2, showing the means to prevent lono'itudinal movement of thelatch operating spindle relative to the door operating` handle.

Figure 5 is a transverse sectional view taken on the line 5-5 of Figure2.

Figure is fragmentary perspective View, showing the slotl formed in theend of the latch operating spindle.

Referring in detail to the drawings in which like numerals refer to likeparts throughout the several views, I have shown for the purpose ofillustration a section of a motor vehicle door comprising an edge facemember 1 having its front edge covered with a sheet metal plate 2. Thelatch mechanism 3, a portion only of which is shown in- Figure 1, issuitably secured to the rear face of the door structure.

The latch mechanism mayv be of any de-V sired type and is actuated bymeans of the exterior handle 4 having a shank 5 provided with an openingG extending therethrough terminating in an enlarged opening 7 throughthe handle portion 4 for a purpose to be hereinafter described. Theshank 5 of the handle 4 is inserted through an opening 8 in the faceplate 2 and is retained against longitudinal movementv relative to thedoor bymeans of the nut 9 threaded on theshank 5.

l? March'29,` 1929, in which-application the construction and operationof the 'escutcheon illustrate An escutcheon member comprising the hollowshells 10 and 10 surrounds the shank 5 exteriorly of the face late 2,the members 10 and 10 being retained in operative position by the spring11. The escutcheon member for securing the handle 4 against longitudi---nal movement relative to the door forms no part of mg' presentinvention, the same being ,1n my copending application-for LettersPatent, Serial No. 350,895, led

member are clearly illustrated, so that a further description of thesame in this present case is believed to be unnecessary.

The latch 3 is operatedI by the spindle-:12. terminating at one end in7vanvenlarged cy-- 7 lindrical portion 13 adapted to be rotatably tudinalmovement of the spindlev12 re a.-

received 1nl the opening 6 formed inthe shank 5. The' end 13 o thespindle 12 is provided with a vrecess 13 in which is seated..

a` pin 14 secured in the shank 5 as is clearly shown in Figures 1 to 4toprevent lon itive to the door operating handle 4. In the inner end' ofthe member 13 is formed a slot 15, the edges of the slot being roundedat 16 as is clearly shown-in Figure 6 for a pur members 18 and 17, theplungers 19 being moved into the positions shown in Fi res 1 and 2 bymeans of the key 22. The ollow sleeve 17 has formed therein a slot 23adapted to receive and guide the pin 24 secured on the cylindrical lockmember 18 for longitudinalmovin the member 18 from the position l sliowninigure 1 to Figure 2, and vice versa.

The lock member 18 is provided withV a projection 25 at its inner endadapted to be received in the slot 15 formed in the end 13 of thespindle 12. v

Referring to Figure 1, the key 22 may be inserted in the slot formed inthe lock member 18 to move the lock plungers 19 out of engagement withthe hollow shell 17 whereupon the lock member 18 may be rotated and inso doing Athe pin 24 is moved in the slot 23 formed in the member 17which causes the member 18 to move longitudinally relative to the handle4 whereby the projection 25 is caused to engage in the slot 15 formed inthe member 12. As previously stated the edges of the slot 15 are roundedoil at 16 to permit easy engagement of the projection 25 therein. Whenthe lock member 18 has been rotated by the key 22 in the manner justpreviously described the same will assume the position shown in Figure2. In this position the lock lungers 19 will engage in the sleeve 17where yy the-handle 4, sleeve 17 and rotatable lockmember 18 aresecuredtogether and rotation of the handle 4 will cause rotation of the spindle12 to thuso rate the latch 3 to ermit the opening'of e doorf f .f-v

eferring to Figure 2 the key 22 may then be inserted in the slotriormedin the cylin-v drical lock member 18 which will move they plungers 19from'the position shown wherev 'upon rotation of the keyv22 willwithdraw s i the projection'25 on thev member 18 from the e slot 15formed in the member 18, the lockV member 18 being guided to itsreseated posi- 1 tion by the pin 24 riding inthe slot 23 so that z thecylindrlcal lock member 18 will assume fthe position shown in Figu pre 1. When in this position the projection 25is diseng the slot 15 sothat. rotation of the, andle 4 will not rotate the spindle 11 to affectthe latch mechanism 3. In other words, when the mechanism is shown as inFigure 1, the han- 4dle4 may be rotated at will without operat- 1; ingto nnlatch the door to permit opening the. i `same by unauthorizedpersons. Y 'It will thus be seen that I have provided a, lsimple andeicient lock structure in a door l .I

operating handle effective to nnlatch the door 1 when in one positionand which will prevent formal changes can be made therein withoutdeparting from the-spirit and substance of my invention the scope ofwhich is commensurate with the appended claims.

What I claim is: l

1. In combination with a door structure having an opening in the sideface thereof and a latch mechanism mounted thereon, a rotatable latchoperating handle having a hollow shank extending into said opening, alatch operating spindle having one end mounted in said shank and its oposite end engageable with said latch mechanism, a keycontrolled lockmember mounted in said handle, and means for rotatably and slidablymoving said lock member into engagement with said spindle wherebyrotation of said handle will permit operation of said latch mechanism.

2. In combination with a door structure having an opening in the sideface thereof and a latch mechanism mountedthereon, a rotatable latchoperating handle having a hollow shank extendinginto said opening, alatch operating spindle having a slot formed in its inner end faceounted in said hollowshank, a keyy'contro ed cylindrical member having aprojection extending from its inner end face mounted in said handle, asleeve having a slot therein surrounding said key-controlled cylindricalmember, a pin exthe unlatching of the door when in another 'I tendinfrom the cylindrical member riding in sai slot, and means permittingsaid pin to slidably move in the slot formed in said sleeve whereby saidkey-controlled cylindri- 5 cal member is caused to move longitudinallyrelative to said handle and said projection l thereon is caused toengage in the slot formed in said spindle whereupon rotation of saidhandle willcause operation of said latch mechanism.

3. In combination with a door structure having an opening in the sideface thereof and a latch mechanism mounted thereon, a rotatable latchoperating handle having 'a portion extending into said opening` a latchoperating spindle operatively engaging with tsaid handle, a hollowsleeve having a slot formed therein positioned in said handle, and akey-controlled lock member having a projection thereon guided by saidslot movable to engage said latch operating spindle to cause operationof said latch mechanism.

4. In combination with a door structure having an opening in the sideface thereof and a latch mechanism mounted thereon, a rotatable latchoperating handle extending into said opening, a latch operating spindleoperatively engageable with said handle, a

, hollow sleeve having a slot therein mounted in said handle, a lockmember having a projection on the side face thereof engageable in saidslot. and means permitting said lock member to be rotated relative tosaid handle whereby7 said pin is caused to move in said slot and causesaid lock member to engage with said spindle whereupon rotation of saidhandle will cause operation of said latch mechanism.

Signed by me at South Bend, Indiana this 18th day of April, 1929.

A PERRY W. SULLIVAN.

